First let me rewrite what I think you tried to convey:
If you do long division of 1-0.1 into 0.9 you get the infinite series .9 + .01 + .009 + ....; Hence 0.99999... = 1.
For the number 0.898989.. you have:
.
To show this do the long division of 1 - .01 into 0.89.